Pipe-wrench



,UNITED STATES PATENT OFFICE.

ROBERT COILAND, OFk EUREKA, CALIFORNIA.k j

MPE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 382,799, dated May 15,1888.

y Application filed January 18, i888. Serial No. 261,111. (No model.)

` pipe wrenches5 and :it has for its object t'o provide a simple,strong, durable, and effective wrench, which may be adjusted in a simpleand easymanner to fit all sizes of pipes. Io accomplish this, I providea main shank or handle having a rigid jaw on one end provided with aseries of sockets and a swinging jaw having a pin at its rear end toengage one of the sockets. close over the outer ends or mouths of thesaid sockets to hold the pin in the desired socket. I further provide apivoted catch to engage the latch and hold it in place.

My invention is more fully described hereinafter in connection with theaccompanying drawings, wherein- Figure 1 is a side view. Fig. 2 is atransverse-section, line .m ao, Fig. 1. Fig. 3 is a bottom plan view.Fig. 4 is a detail perspective view of the latch.' Fig. 5 is a similarview of the catch.

Referring by letter to the drawings, A designates the shank ofthewrench, which is provided with a rigid (and, preferably, integral) jaw,B, having a rounded and serra-ted outer end. The lower side ofthe saidjaw is provided with a series of transverse sockets, C C, which areinclined outward or toward the end of the jaw. A latch, D, is pivoted tothe jaw B and bears against the under side thereof, thereby closing themouths or lower'ends of all the sockets. This latch is provided at itsouter end with an ear, E, which fits in a recess, e, in the jaw and ismounted on'a transverse pin, F, in the said recess. 'Ihe inner end ofthe latch is beveled and provided with a shoulder, G, for a purpose tobe explained, and a detent, H, on the upper side of the latch at itsinner end fits in a recess, I, in the lower side of the jaw, and holdsthe inner end ofthe latch from lateral play. j

A catch, K, is pivoted to the jaw B adjacent to the inner end of thelatch, and it is also I further provide a latch toV provided with abeveled end having a shoul- Figui shows the open position of thelatch 'Ain dotted lines.

,The swingingy jaw N comprises the'hook 0,'

which closes around the end of the rigid jaw and is serrated on itsinner surface, and the side arms, I P, which pass on opposite sides ofthe jaw-B and are connected at their extremities by the -transverse pinR, which fits -in one of the sockets C C. The' hook and the tion withthe drawings. vSeveral positions of the movable or swinging jaw'and thedirection in which the shank is swung to operate the wrench are shown inFig. 1.

With one adjustment of the movablejavv several sizes of pipe may beengaged, owing to the rounded shape of the end of the rigid jaw, and thelargest pipes can be engaged when the movable jaw is raised or near itsvertical position.

Vhen the pipe is too large to be.

grasped by the jaws in one position, the movablej aw is engaged inasocket nearer the outer jaw is not concentric with either of thesockets,

the distance between the jaws is reduced as the movable jaw swings downto a position parallel with the rigidjaw. Y

The object of the detent H on the free end of the latch is to hold thelatter from being strained laterally, andthe ear E on the yother It willbe observed' that the face of the rigid IOO end of the latch, beingmounted in a socket in the jaw, also prevents the latch from beingtwisted out of position.

Having A thus described my invention, I claiml. In a wrench, thecombination ofthe shank A, having the jaw B provided with sockets C Cand the recess I, the swinging jaw having a transverse pin, R, engagingany one of the sockets, and the latch pivoted at its front or outer endVto the jaw B, and having a detent on its other end fitting in the saidrecess I in the jaw, the said latch being adapted to close the open endsor mouths of the said sockets, substantially as and for the purposespecified.

2. In a Wrench, the combination, with the shank having a rigid jawattached thereto and provided with sockets (l C, of the movable jawhaving a transverse pin, R, mounted in one of the sockets, the pivotedlatch closing over the said sockets and having a shoulder on its freeend, and the catch having a shoulder to engage the shoulder on thelatch, substantially as specied.

'3. In a wrench, the combination, with the shank having a rigid jawprovided with sockets C, of the movable jaw having a transverse pin, R,mounted in one of the sockets, the pivoted latch having a beveled endprovided with a shoulder, G, and the pivoted catch having a thumb-hold,N, and a beveled outer end pro'- vided with ashoulder to engage theshoulder G, substantially as and for the purpose specied.

In testimony thatI claim the foregoing as my own I have hereto aiixed mysignature in presence of two Witnesses.

ROBERT COPLAND.

Vitnesscs:

L. B. KINesnURY, J. A. SINOLAIR.

